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Risk factors
By Mayo Clinic staffBell's palsy occurs more often in people who:
- Are pregnant, especially during the third trimester, or who are in the first week after giving birth
- Have an upper respiratory infection, such as the flu or a cold
Also, some people who have recurrent attacks of Bell's palsy, which is rare, have a family history of recurrent attacks. In those cases, there may be a genetic predisposition to Bell's palsy.
References
- Ronthal M. Bell's palsy: Pathogenesis, clinical features, and diagnosis in adults. http://www.uptodate.com/home/index.html. Accessed Jan. 10, 2012.
- Bell's palsy fact sheet. National Institute of Neurological Disorders and Stroke. http://www.ninds.nih.gov/disorders/bells/detail_bells.htm. Accessed Jan. 10, 2012.
- Ronthal M. Bell's palsy: Prognosis and treatment in adults. http://www.uptodate.com/home/index.html. Accessed Jan. 10, 2012.
- Bell's palsy. The Merck Manuals: The Merck Manual for Healthcare Professionals. http://www.merckmanuals.com/professional/neurologic_disorders/neuro-ophthalmologic_and_cranial_nerve_disorders/bells_palsy.html?qt=&sc=&alt= . Accessed Jan. 10, 2012.
- Numthavaj P, et al. Corticosteroid and antiviral therapy for Bell's palsy: A network meta-analysis. BMC Neurology. 2011;11:1
- Van der Veen EL, et al. A small effect of adding antiviral agents in treating patients with severe bell palsy. Otolaryngology — Head and Neck Surgery. In press. Accessed Jan. 10, 2012.
- McAllister K, et al. Surgical interventions for the early management of Bell's palsy. Cochrane Database of Systematic Reviews. 2011;(2):CD007468. http://www2.cochrane.org/reviews. Accessed Jan. 10, 2012.
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